Topband: ICE Model 135B Preamp

[jim.thom jim.thom@telus.net]

Date: Wed, 8 Nov 2023 06:12:07 -0600
From: Rob Atkinson <ranchorobbo at gmail.com>
To: topband at contesting.com
Subject: Topband: ICE Model 135B Preamp

<On those ICE preamps, check the small dipped inductors, because they
<can blow open if the preamp is exposed to a high enough RF field.  If
<your preamp is on a rx antenna and you are transmitting with ham QRO
<nearby that's enough to do it.  IIRC powering down the preamp isn't
<enough.  It has to be behind some kind of feedline relay that opens.

<73
<Rob
<K5UJ

How do you operate QSK with that kind of setup ?   Are sped up vac relays
required to open off and / or grnd the remote RX pre-amp ?  What if one of
those 8 or 9 circle arrays used ?  Each one has it's own pre-amp.

Jim  VE7RF